Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9XXT callsign genealogy
Currently held by Martin, John H
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9XXT's current licensee, walking backwards.
- Martin, John HILgranted 2020-03-23cancelled 2025-03-21
Successor callsigns
Callsigns held now by people who previously held K9XXT.
No current licensee on record previously held this callsign.